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Four exploration permits

ROBEX currently holds four exploration permits, all located in Mali, in West Africa, but two permits have expired at the beginning of the year 2019 and therefore are being reassigned by the Malian State (Mininko and Sanoula). Mali is currently Africa’s third most important gold-producing country. Two of Robex’s permits are situated in southern Mali (Mininko and Kamasso), while the two others are located in the western area of the country (Sanoula and Kolomba). ROBEX is actively working towards developing its permits, all of which indicate favorable geology for the discovery of gold deposits.

ExplorationSouth Mali
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ExplorationWest Mali
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ExplorationSouth Mali
MININKO
KAMASSO
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ExplorationWest Mali
KOLOMBA
SANOULA
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ExplorationSouth Mali
  • MININKO

    The project includes the Mininko exploration permits covering 62 km2. Robex owns 100% of the permit and a 1% NSR is liable. It is on this property that the Nampala mine is located. It is located around 57 km to the southwest of the town of Sikasso and 21 km south of Niéna village, which is accessible via the trail from the Nampala mine. Geologically, it is located in the South Mali window, in the inferior Proterozoic age Birrimian bedrock, where the Syama, Morilla, and Nampala gold deposits were found. The project includes the operation permit of the Nampala deposit, and is located 35 km north-northeast of the Syama deposit and 92 km southwest of the Morilla deposit.

    The region of the permit has been explored in detail since 1980, and soil geochemistry, geology, geophysics, and surveys revealed potential areas for exploration. The work has defined several gold targets, one of which became the Nampala deposit. Geochemical and geophysical studies have been planned on this property to determine drilling sites conducive to discoveries that may lead to future exploitation.

  • KAMASSO

    The project includes the Kamasso exploration permits covering 100 km². Robex owns 100% of the permit and a 1% NSR is liable. It is located about 74 km southwest of Sikasso and 35 km south of Niéna village, which is accessible via the Nampala mine trail. In the prospecting Sikoro area, the geochemical anomaly is combined with an induced polarization anomaly. This gold anomaly is located on the southern extension of the stratigraphic and structural sequence where the Nampala deposit is. In 2009, 700 meters of drilling were completed and show a rooting under the surface of the soil anomaly.

    The Kamasso permit offers very interesting prospects. It is located on the southern extension of the stratigraphic and structural sequence in which the Nampala deposit (Mininko) is located. It is located a few kilometers from Nampala. Exploration work previously carried out had helped to identify several geochemical anomalies in soils including the Sikoro, as well as those of Kadjila and Sirakoroni confirmed by wells and short-destructive surveys. The completion of a geological map using aerial and satellite images and an airborne geophysical survey of the Sysmine project in the territory of the Kamasso permit had also showed the continuation of large structures of the Nampala anomaly (Mininko permit) defined by faulting and fracture networks. Geochemical and geophysical studies have been planned on this property to determine drilling sites conducive to discoveries that may lead to future exploitation.

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ExplorationWest Mali
  • KOLOMBA

    The project includes the Kolomba exploration permit covering 64 km2. Robex owns 100% of the permit. It is located about 12 km south of Kenieba and 1 km northeast of Dabia village. The road linking Bamako Kenieba passes through the center of the permit. Geologically, it is located in the southeast sector of the Kédougou Kéniéba window in the inferior Proterozoic age Birrimian bedrock, which can be found in the central and northern part of the gold deposits of Sadiola, Loulo and Tabakoto. The project is located 21 km northeast and 25 km south of the Fekola and Tabakoto gold deposits respectively.

    The region of the permit has been explored in detail since the 1990s, and soil geochemistry, geology, geophysics, and surveys revealed potential areas for gold exploration. These studies have yielded poor results in general. They are consistent with geological landscapes where saprolite is dominate, with scatterings of small quartz stock work and, at times, higher amounts of gold mineralization, but the latter are sporadic and have no real continuity. The results obtained on the target MM-5A show that the central area of this target could be prospective. The drilling on anomalies MM-2, MM-3 and Bilali Santos highlighted valid intersections worthy of follow-ups to establish continuity. Consistent gold values were also revealed in trenches dug in a targeted area of 40 meters by 50 meters.

  • SANOULA

    The project includes the Sanoula exploration permit covering 31.5 km2. Robex owns 100% of the permit and a 1% NSR is liable.  It is located around 58 km north-northwest of the town of Kenieba and 120 km south of the city of Kaye, which is accessible by trails. Geologically, it is located in the northern part of the Kédougou Kéniéba window, in the inferior Proterozoic age Birrimian bedrock, which can be found in the central and northern part of the gold deposits of Sadiola, Loulo and Tabakoto. The project is located on the Senegalese-Malian Accident (ASM), which marks the boundary between the Kofi Formation to the east and the Kéniébandi Formation to the west, and is located between the Sadiola, 56 km north-northwest, and Loulo, 26 km south-southeast, deposits.

    The region of the permit has been explored in detail since 2000, and soil geochemistry, geophysics, geology, and surveys have found a linear gold mineralized area. The area was drilled in 2006 and 2007 following the discovery of a geochemical anomaly associated with a resistivity anomaly. A total of 966 meters was drilled; the mineralization intersection is contained in a highly distorted sedimentary tourmaline formation. Gold occurs mainly in strongly dipped pyritized quartz veins, in moderately silicified tourmaline-enclosed rock. This type of gold mineralization characterizes the Loulo deposit.